If your Bolens riding tractor stalls out when you put it in reverse check the reverse safety switch. Sometimes this switch can get stuck or goes bad, which it would need to be replaced.
The reverse safety switch is in place as a safety hazard so the riding tractor will turn off if it is in reverse and the blades are engaged.
The tag that has the model and serial number of your Bolens riding tractor can be found under the seat. 1997 and later model and serial numbers are typically 11 characters long.
The serial number for your Bolens riding lawn tractor will start with a "13".
NOTE: if you need a part for the small engine in your Bolens lawn tractor, there will be a separate model/serial number for the engine. Here are the small engines that are available in your Bolens tractor. Visit the page of the engine you have to find out where the model/serial number is located for your small engine model: